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LP2902MX General Purpose Operational Amplifier Equivalent & Substitute Parts
Part Overview
The LP2902MX is a general purpose operational amplifier integrated circuit manufactured by Texas Instruments, configured as a 4-circuit device in 14-SOIC surface mount packaging. This part is classified as obsolete, which necessitates identification of equivalent and substitute components for ongoing design support and production continuity. The LP2902MX operates across a supply voltage range of 3V to 26V with an operating temperature range of -40°C to 85°C, making it suitable for general signal conditioning and amplification applications.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Amplifier Type | General Purpose | — |
| Number of Circuits | 4 | — |
| Slew Rate | 0.05 | V/µs |
| Gain Bandwidth Product | 100 | kHz |
| Current - Input Bias | 2 | nA |
| Voltage - Input Offset | 2 | mV |
| Current - Supply | 85 | µA |
| Current - Output / Channel | 10 | mA |
| Voltage - Supply Span (Min) | 3 | V |
| Voltage - Supply Span (Max) | 26 | V |
| Operating Temperature Range | -40 to 85 | °C |
| Package / Case | 14-SOIC (0.154", 3.90mm Width) | — |
| Mounting Type | Surface Mount | — |
| RoHS Status | RoHS non-compliant | — |
| Product Status | Obsolete | — |
Substitute Part Grouping Explanation
Substitution of the LP2902MX is determined by strict adherence to the following electrical and mechanical parameters:
Critical Substitution Parameters:
- Number of circuits: 4 (all substitutes must provide 4 independent amplifier circuits)
- Package type: 14-SOIC surface mount configuration with 0.154" (3.90mm) width
- Supply voltage range: Minimum 3V, Maximum 26V or greater
- Operating temperature range: Must support -40°C to 85°C minimum
- Mounting type: Surface mount only
Functional Compatibility Parameters:
- Amplifier classification: General purpose operational amplifier
- Input bias current: 2 nA or higher (lower values indicate improved performance)
- Input offset voltage: 2 mV or lower
- Output current per channel: 10 mA or greater
- Slew rate: 0.05 V/µs or greater
- Gain bandwidth product: 100 kHz or greater
Substitutes are grouped into two categories: direct packaging equivalents (identical electrical and mechanical specifications) and functional alternatives (enhanced performance characteristics with compatible pinouts and packaging).
Parameter Comparison
| Part Number | Manufacturer | Slew Rate (V/µs) | GBW (kHz) | Input Bias (nA) | Input Offset (mV) | Supply Current (µA) | Output Current (mA) | Vcc Min (V) | Vcc Max (V) | Temp Range (°C) | Package | Status | RoHS |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| LP2902MX | Texas Instruments | 0.05 | 100 | 2 | 2 | 85 | 10 | 3 | 26 | -40 to 85 | 14-SOIC | Obsolete | Non-compliant |
| LP2902MX/NOPB | Texas Instruments | 0.05 | 100 | 2 | 2 | 85 | 10 | 3 | 26 | -40 to 85 | 14-SOIC | Active | ROHS3 Compliant |
| LM2902D | onsemi | 0.5 | 1200 | 20 | 3 | 5600 | 30 | 3 | 26 | -40 to 125 | 14-SOIC | Obsolete | Non-compliant |
| LM2902DR | Rohm Semiconductor | 0.3 | 1200 | 20 | 1 | 4000 | 30 | 3 | 32 | -40 to 125 | 14-SOIC | Obsolete | ROHS3 Compliant |
| LM2902DRG3 | Texas Instruments | 0.5 | 1200 | 20 | 3 | 5600 | 30 | 3 | 26 | -40 to 125 | 14-SOIC | Last Time Buy | ROHS3 Compliant |
| LM2902KAVQDR | Texas Instruments | 0.5 | 1200 | 20 | 3 | 5600 | 30 | 3 | 30 | -40 to 125 | 14-SOIC | Active | ROHS3 Compliant |
| LM2902KAVQDRQ1 | Texas Instruments | 0.5 | 1200 | 20 | 3 | 5600 | 60 | 3 | 32 | -40 to 125 | 14-SOIC | Active | ROHS3 Compliant |
| LM2902KDR | Rohm Semiconductor | 0.3 | 700 | 20 | 3 | 5600 | 30 | 3 | 26 | -40 to 125 | 14-SOIC | Obsolete | ROHS3 Compliant |
| LM2902KNSR | Texas Instruments | 0.5 | 1200 | 20 | 3 | 5600 | 30 | 3 | 26 | -40 to 125 | 14-SO | Last Time Buy | ROHS3 Compliant |
| LM2902KVQDR | Rohm Semiconductor | 0.3 | 1200 | 20 | 3 | 5600 | 30 | 3 | 26 | -40 to 125 | 14-SOIC | Obsolete | ROHS3 Compliant |
| LM2902KVQDRG4 | Texas Instruments | 0.5 | 1200 | 20 | 3 | 5600 | 30 | 3 | 30 | -40 to 125 | 14-SOIC | Last Time Buy | ROHS3 Compliant |
Engineering Selection Recommendations
Direct Equivalent (Identical Electrical Performance):
LP2902MX/NOPB is the direct equivalent of LP2902MX with identical electrical specifications. This part is currently in active product status and carries ROHS3 compliance certification, making it the preferred selection for new designs and production continuity. The /NOPB designation indicates lead-free, halogen-free packaging in Tape & Reel format.
Functional Substitutes (Enhanced Performance):
The LM2902 series variants provide enhanced electrical performance characteristics while maintaining 4-circuit general purpose amplifier functionality in 14-SOIC packaging. These parts feature:
- Increased slew rate (0.3 to 0.5 V/µs versus 0.05 V/µs)
- Higher gain bandwidth product (700 kHz to 1.2 MHz versus 100 kHz)
- Improved output current capability (30 to 60 mA versus 10 mA)
- Extended operating temperature range (-40°C to 125°C versus -40°C to 85°C)
- Extended maximum supply voltage (26V to 32V)
Active Product Status Substitutes:
LM2902KAVQDR and LM2902KAVQDRQ1 are currently in active production status with ROHS3 compliance. Both parts support automotive-grade qualification (AEC-Q100). LM2902KAVQDRQ1 provides enhanced output current (60 mA per channel) and maximum supply voltage of 32V, suitable for applications requiring higher drive capability.
Compliance Considerations:
LP2902MX is RoHS non-compliant. For applications requiring RoHS compliance, LP2902MX/NOPB or any LM2902 variant with ROHS3 designation must be selected. All active and last-time-buy LM2902 variants carry ROHS3 compliance certification.
Packaging Considerations:
LM2902KNSR uses 14-SO packaging (0.209", 5.30mm width) instead of standard 14-SOIC (0.154", 3.90mm width). This part is not recommended as a direct substitute due to different physical dimensions, which may require PCB layout modifications.
Frequently Asked Questions (FAQ)
Q: Can LP2902MX be directly replaced with LP2902MX/NOPB?
A: Yes. LP2902MX/NOPB is the direct equivalent with identical electrical specifications. The /NOPB designation indicates lead-free, halogen-free packaging. The primary difference is product status (active versus obsolete) and RoHS compliance (ROHS3 compliant versus non-compliant). This is the recommended replacement for obsolete LP2902MX inventory.
Q: What is the difference between LP2902MX and LM2902 series parts?
A: LP2902MX and LM2902 series are both 4-circuit general purpose operational amplifiers in 14-SOIC packaging, but LM2902 variants feature significantly enhanced performance: 10x higher slew rate, 12x higher gain bandwidth product, 3x higher output current, and extended temperature range to 125°C. LM2902 parts are suitable for applications requiring higher speed and drive capability.
Q: Are all LM2902 variants pin-compatible with LP2902MX?
A: Yes. All LM2902 variants maintain identical 14-pin SOIC pinout configuration, ensuring direct pin-for-pin compatibility. However, electrical performance differences must be evaluated for specific application requirements.
Q: Which substitute part is recommended for new designs?
A: LM2902KAVQDR or LM2902KAVQDRQ1 are recommended for new designs. Both are in active production status, carry ROHS3 compliance, and include automotive-grade qualification (AEC-Q100). LM2902KAVQDRQ1 provides enhanced output current (60 mA) for applications requiring higher drive capability.
Q: What is the significance of the /NOPB suffix?
A: The /NOPB suffix indicates lead-free, halogen-free packaging compliant with RoHS directives. This designation is standard for modern component procurement and environmental compliance requirements.
Q: Can LM2902KNSR be used as a substitute?
A: LM2902KNSR is not recommended as a direct substitute. While it provides identical electrical functionality, it uses 14-SO packaging (0.209" width) instead of 14-SOIC (0.154" width), requiring PCB layout modifications. Select 14-SOIC packaged variants for direct board-level substitution.
Q: What is the difference between LM2902KAVQDR and LM2902KAVQDRQ1?
A: Both parts are identical except for output current per channel: LM2902KAVQDR provides 30 mA per channel, while LM2902KAVQDRQ1 provides 60 mA per channel. Select LM2902KAVQDRQ1 for applications requiring higher output drive capability.
Q: Are there temperature range limitations when substituting LP2902MX?
A: LP2902MX operates to 85°C maximum. LM2902 variants extend to 125°C. If the application operates above 85°C, LM2902 series parts are required. If operation is limited to 85°C or below, both LP2902MX/NOPB and LM2902 variants are suitable.
Q: What is the maximum supply voltage for each part?
A: LP2902MX and LP2902MX/NOPB support 26V maximum. Most LM2902 variants support 26V to 30V. LM2902KAVQDRQ1 and LM2902DR support 32V maximum. Verify application supply voltage requirements before selection.
Q: Are automotive-grade parts available?
A: Yes. LM2902KAVQDR and LM2902KAVQDRQ1 carry automotive-grade qualification (AEC-Q100). These parts are suitable for automotive and industrial applications requiring enhanced reliability certification.
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